IR probe leds does not flash at all

Connected the IR probe version 1.3 to the board (Duet Ethernet) and when powered on there is no flashing of the leds at all.
I have measured the VCC+ en ground on the little board and there is 3.3v. Also measured if the signal lead is connected to the main board with an ohm meter and that is also fine. The probe does respond to the surface but when probing to all the points, there is no flashing and If got the message "Z probe was not triggered during probing move". Looks like the there is something wrong with the IR-probe board. What can I do. Wires to the probe are quite long around 3 meters.

In the control panel there is a distance probe reading like the 465 and 535.
After I zero the nozzle tip to the buildplate with G92 Z0
I entered the G30 S-1 after going 5mm up.
I get a reading of 1.15mm so I asume the sensor is triggering something?

I remembered I did not connect the board first with USB but ride away using
the ethernet cable. Could that be the reason for not flashing the led's?

I'm back with a brand-new Duet Ethernet board and a new Ir-sensor. Ir sensor is flashing 4 times when starting up.
I followed all the instruction several times over here but for some reason it does not work. Constantly getting the message after send "M558 P1 and G31 P500 Z1.0"

"G30 S-1
Error: Z probe already triggered at start of probing move"
Even when sensor is way up like 15 cm.